Zhao, 68, worked in the Ministry of Posts and Telecommunications before retirement. He loves calligraphy, especially the ground calligraphy after retirement. He has left his handwritings on the ground of Beihai, Jiangshan and Tiantan Park. "The ground calligraphy can practice brawn and also the brain. My handwritings on the ground will attract the elderly with the same hobby. Talking with them brings me a lot fun."(Chinanews/Lin Peiqing)